Romans Lab 78: Razopr Sharp Lines in the Semi Slav Defense Explained Part 1More than 100 minutes of instructional videoOn this DVD G.M. Roman, G.M. Eugene Perelshteyn and World Computer Champion Rybka bring new and original analysis on one of the most popular openings, the Semi Slav Defense.The mainline covered is the razor sharp g2-g4 variation which contains attacking lines for both white and black. So if you play the Slav, or play against it, this DVD will leave you prepared well beyond your opponent.